FR749980A - Improvements to pulse-emitting mechanisms - Google Patents

Improvements to pulse-emitting mechanisms

Info

Publication number
FR749980A
FR749980A FR749980DA FR749980A FR 749980 A FR749980 A FR 749980A FR 749980D A FR749980D A FR 749980DA FR 749980 A FR749980 A FR 749980A
Authority
FR
France
Prior art keywords
pulse
emitting mechanisms
mechanisms
emitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR749980A publication Critical patent/FR749980A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
FR749980D 1933-01-30 1933-02-02 Improvements to pulse-emitting mechanisms Expired FR749980A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB2906/33A GB414120A (en) 1933-01-30 1933-01-30 Improvements in impulse sending mechanisms for automatic telephone exchange systems and the like
FR749980T 1933-02-02
BE394207T 1933-02-07

Publications (1)

Publication Number Publication Date
FR749980A true FR749980A (en) 1933-08-01

Family

ID=9748276

Family Applications (1)

Application Number Title Priority Date Filing Date
FR749980D Expired FR749980A (en) 1933-01-30 1933-02-02 Improvements to pulse-emitting mechanisms

Country Status (3)

Country Link
BE (1) BE394207A (en)
FR (1) FR749980A (en)
GB (1) GB414120A (en)

Also Published As

Publication number Publication date
GB414120A (en) 1934-07-30
BE394207A (en) 1933-03-31

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